Electric heating torch



Oct. 31, 1933. cuso 1,932,703

ELECTRI C HEATING TORCH Filed July 11. 1930 2 Sheets-Sheet 1 Oct. 31, 1933. J MANCUSO 1,932,703

ELECTRIC HEATING TORCH Filed July 11 1930 2 Sheets- Sheet 2 3 7 7 7/0. Z. /0 g I ,9

Patented Oct. 31, 1933 PATENT OFFICE UNITED STATES 4 Claims.

This invention consists of an electric heating torch, especially adapted for use in removing paint from metal or like surfaces, although likewise adapted for other uses.

5 Another object of the invention is to provide a heating torch which is portable and capable of manual manipulation to permit the torch to be brought into contact with the work, for effectively dislodging the paint film in a facile manner.

A further object of the invention is to provide a heating torch with a removable electric heating element, which may be quickly attached and detached after the fashion of an electric lamp bulb, the heating element being exposed to radiate the direct rays of the heat against the work.

A still further object of the invention is to provide an electric torch which includes a heating element with an exposed resistance coil, which is spirally wound to provide a compact, concentrated heating medium, so encased that the volume of radiated heat may be adjusted to increase or diminish the area impinged by the heat rays.

Other objects of the invention will be apparent from the following description of the present preferred forms thereof, taken in connection with the accompanying drawings, wherein Fig. 1 is a perspective View of a heating torch, constructed in accordance with the present invention;

Fig. 2 is a vertical sectional view thereof;

Fig. 3 is a front elevational View of a torch, constructed in accordance with the present invention;

Fig. 4 is a perspective view of one type of torch nozzle, constructed in accordance with the present invention;

Fig. 5 is a fragmentary side elevational View of the torch, illustrating the application of the nozzle thereto; and

Fig. 6 is a perspective view of a modified form of nozzle.

The device of the present invention consists of a housing or casing, generally designated '7, which, in the present instance, is shown to be of truncated cone shape configuration and includes an outer shell 8 and a spaced inner shell 9, between which a non-inflammable medium, such as asbestos, 1 0 is interposed. Preferably the inner shell 9 is made of a metal of high heat-conductivity, such as copper, to augment the intensity of the heat generated within the housing or casing 7, in a manner more fully hereinafter set forth. The inner end of the inner shell 9 is reduced and has a porcelain socket l1 mounted therein, which latter may be standard and is secured from displacement in the reduced portion of the inner shell in any suitable manner. In the present instance the socket is detachably engaged by screw 12, which extends through the terminal walls of the shells 8 and 9, and engage a boss 13 formed on the inner end of the socket 11. The boss 13 spaces the socket from the terminal Wall of the inner shell to provide a space through which an electric cable 14 may extend. The free terminal of the cable is adapted to be placed in electrical communication with a suitable source of power, in a manner well known in the art.

The reduced end of the casing 7 is equipped With a hollow insulated handle 15, the latter being secured to the casing in any desired manner and extending at right angles thereto. The cable 14 is adapted to extend upwardly through the handle and projects laterally therefrom. The outer end of the handle is detachably engaged by one end of a supporting bracket 16, the opposite end of the latter being engaged with the casing 7, near its enlarged outer end. The bracket 16 may be mounted on a support near the work, if desired, to mitigate the labor incident to using the torch, at the same time permitting the latter to be readily moved by the handle, at the option of the user.

The heating element of the present invention consists of a cone 17, made of porcelain or other suitable insulating material and is provided with a peripheral spirally arranged groove, which extends the full length of the cone and which has mounted therein a resistance coil 18, one end of the latter being detachably engaged with an electrode or bolt 19, the latter extending through the longitudinal axis of the cone and through the longitudinal axis of a plug 20, formed on the inner enlarged end of the cone. The plug 20 is adapted to be detachably engaged in the socket 11, in an obvious manner, and is of standard design, being composed of a porcelain core encased by a metal ferrule. The inner end of the coil 18 is grounded to the ferrule; consequently current supplied through the cable 14 is adapted to close the circuit for heating the coil 18. The heat from the coil 18 is radiated outwardly through the open end of the housing or casing '7 and the volume thereof may be adjusted by nozzles 21 and 22. The nozzle 21 has a relatively flat, oval shaped mouth 23, while the nozzle 22 has a round mouth 24. The inner enlarged ends of the nozzles 21 and 22 are adapted to be flexed over the enlarged outer end of the casing 7 and may be readily attached and detached at the option of the user.

In use of this device, current is transmitted through the cable 14 to the coil 18. The heat radiated by the coil 18 impinges against the heat-conductive inner shell 9 and is projected therefrom outwardly through the open end of the casing, or through the mouth of the nozzle, where a nozzle is engaged over the open end of the casing. Because oi the construction and contour of the heating element and the construction a contour oi the casing, the heat proiected om the housing or casing is very intense and is concentrated as well as adjusted in volume by the nozzles 21 and 22. The detachability oi the heating cone is oi the essence of importance, in that it may be detached when not in use and the parts thereof may be replaced when desired, or found necessary.

The torch as an entity is compact and may be used with convenience and with the expenditure of very little manual labor, even by a person unskilled in the art to which the invention appertalns; It is especially effective for removing paint from automobile bodies, yet I am aware that the device is susceptible or various other uses.

Various changes may be made in the device, especially in the details of construction, proportion and arrangement of parts, within the scope of the appended claims.

What is claimed is:

1., A heating torch including a truncated cone shaped housing composed o1 nested shells equipped with insulating material therebetween, a heating element concentrically mounted in the housing, said heating element being of conical shape with the large end thereof positioned in the small end of the housing, and a handle connected to said small end of the housing and projecting at right angles to the long axis of the latter.

2. A portable heating torch including a housing equipped with a heating element therein, a handle secured to the housing for manipulating the latter, and a bracket one end oi which lies beneath and is engaged with the handle, the opposite end of the bracket engaging the housing near the outer end of the latter to support the torch.

3. A heating torch including a truncated cone shaped housing equipped with a heating element therein, and a tapering nozzle engageable with the large end of the housing to adjust the volume of heat radiated from the latter, the housing engaging end of the nozzle being inherently resilient to permit said nozzle to be flexed on the housing.

4. A portable heating torch including a completely insulated cone shaped housing the small end of which is closed, a heating element mounted in the closed end of the housing, and means for supporting the torch while in use, embodying a handle extending at right angles to the housing and a bracket, one end of which is secured to the free end of the handle and the opposite end secured to the housing, the intermediate part of the bracket being parallel to the housing to provide a supporting base.

BENJAMIN J. MANCUSO. 

